| Post Name | TECHNICIAN GR II-Refrigeration Mechanic - General/Society Category |
|---|---|
| Department | KCMMF |
| Question Paper Code | 212/2015 |
| Date of Test | 24 November 2015 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Dry ice is:
Answer
D. COs
2
Which type condensers are commonly used in water coolers?
Answer
B. Forced Draft
3
The weight of HC charged to the system for drop in conversion from CFC 12 to HC is:
Answer
C. 40%
4
The ball bearings of electrical motor are lubricated by :
Answer
A. Grease
5
The component which controls the flow of refrigerant to the evapcerator is called :
Answer
C. Expansion valve
6
Dehydrator is installed in the:
Answer
C. Liquid line
7
The idea of Pulsetube originated from Gifford is in: |
Answer
C. c) 1961
8
8 “ASHRAE” is:
Answer
A. American Society of Heating Refrigerating and Air Conditioning Engineers
9
Refrigeration is the process of --——_——— heat.
Answer
D. Transfering
10
Auto defrost operated by:
Answer
C. Timer switch
11
Rectifiers are used to convert :
Answer
C. c) ACto DC
12
Normal drinking water temperature is :
Answer
A. 10°C
13
Brine Solution is:
Answer
D. Secondary refrigerant
14
Ifthe fan blades are cracked :
Answer
B. Change the blade
15
Poor compression due to:
Answer
B. Reeds Leak
16
The chemical formula of water is :
Answer
C. H20
17
Environment friendly refrigerant R134a is used in new generation domestic refrigerators. Its
chemical formula is :
Answer
D. CeoHeF, .
18
Actually the compressor has two jxbs. One is compressing the refrigerant vapours and the
other is:
Answer
B. Circulate the refrigerant in the system
19
Refrigerator door is pulled close by :
Answer
A. Magnetic gasket
20
The five micron filters is named as :
Answer
D. Fine filter
21
The component which releases the heat from the refrigerant is :
Answer
A. Condenser
22
C.A.V stands for :
Answer
B. Constant Air Volume
23
R.717 stands for :
Answer
A. Ammonia
24
Zeotropic mixtures are coming under —--——————— series number.
Answer
B. 400
25
The clearance between cylinder wall and piston wall is kept :
Answer
A. .0003"
26
Cast iron is produced from which furnace :
Answer
B. Cupola furnace
27
The unit of resistance is : |
Answer
B. Ohm |
28
Efficiency is always : |
Answer
C. Less than one
29
The reason for poor condensation is:
Answer
D. Fins blocked
30
Ideal pressure of F12 is :
Answer
C. 6kg/em*
31
The metal wire which give good earth contact is : .
Answer
A. Copper
32
a2. Gasket prevents :
Answer
D. Leaks in joints
33
The evaporator which is more efficient is :
Answer
B. Flooded evaporator
34
Thermostat element is charged with :
Answer
C. Volatile liquid
35
The electrical fire spreading can be protected by :
Answer
D. Fire extinguisher
36
An air sample without water vapour is called :
Answer
B. Dry air
37
Athermostat controls :
Answer
D. The temperature in the system
38
The valve seating should be checked for leak by :
Answer
B. Kerosene
39
The size of the gasket is based on :
Answer
C. Thickness
40
_ 40. 1Jowe =————————-
Answer
A. 10° ergs
41
The maximum amount of vapours having no unvapourised liquid is :
Answer
B. Saturated vapours
42
The given formula v = (π × D² × SNR)/4 cubic inch/min is used for finding:
Answer
B. Piston Displacement
43
The refrigerant used for ice plant is ;
Answer
C. Ammonia
44
Which device protect our circuits from overflowing current? 3 |
Answer
D. Fuse
45
Relay is an ———————— Operated switch
|
Answer
B. Electrical
46
Cold air moves in the direction of :
Answer
B. Downward
|
47
Brine Solution density is checked by :
Answer
B. Hydrometer
|
48
Ifthe Solenoid valve has mechanical problem :
Answer
A. Service the plunger
49
The Piston is made of : |
Answer
D. Cast iron |
212/2015 8 A
50
Evaporative condensers cooling medium is :
Answer
A. Combination of air and water
51
The effect of cooling produced by a good installed unit will be :
Answer
A. Maximum
52
Inarefrigeration system froating starts from capillary due to :
Answer
D. Drier filter partially blocked
53
Starting capacitor is employed to increase :
Answer
B. Motor torque and power factor
54
HFC should not vent to atmosphere because :
Answer
B. It has high G.W.P
55
The valve lifting capacity control lifts the :
Answer
C. Suction valve
56
At which point the °C scale and °F scale will be same
Answer
C. c) 40°
57
The chemical formula of R12 is:
Answer
A. CChF2
58
Which one of the following is the cause of high head pressure?
Answer
A. Air is the system
59
Which one of the following is not a refrigerant control device?
Answer
C. Thermostat switch
60
Ina reciprocating compressor suction and discharge reeds are made of :
Answer
D. Spring steel }
61
Name the type of compressor used in domestic refrigerator :
Answer
D. Sealed type reciprocating
62
Liquid refrigerant collects in the lower coil of the condenser and flows through :
Answer
D. Capillary tube
63
Water inlet flow of the water cooler is controlled by :
Answer
C. Float valve
64
Thermostatic expansion valve function with :
|
Answer
C. Suetion temperature
65
Excessive frost collection inside the deep freezer is :
Answer
C. Acts as an insulation
66
Reason for Thermostat not cutout is ;
Answer
A. Thermoetat contacts welded
67
An object with a difference of potential exists between it and earth is called :
Answer
A. Live
68
The reason for thermostat become defective is :
Answer
C. Carbon formation in contact points
69
In Freon group condenser tubes are :
Answer
D. Copper
70
The cooling capacity of 1 ton of refrigeration is :
Answer
B. 12,000 BTU/hr
71
The instrument used for finding the leakage of Freon and Methyl chloride is :
|
Answer
B. Halide torch
72
In the following which one is not a part of an oil pressure safety control’?
Answer
D. Feeler bulb
73
Ina Fin & Tube type Air cooled condenser Fins are provided for :
|
Answer
C. Increasing the heat transaction rate
74
Expansion valve is located :
Answer
A. Before the evaporator
75
What is the expansion of LED?
Answer
B. Light emitting diode
76
Capillary tube is used in conventional refrigerator as a : :
Answer
D. All of the above
77
CSIR wiring will not have any one of the following : |
Answer
B. Run capacitor
78
78 Which of the following refrigerant is highly toxic and flammable?
Answer
A. Ammonia
79
For safety which wire is connected to the ON/OFF switch : |
Answer
D. Earth |
80
High discharge temperature is due to: |
Answer
C. Fan motor defective
81
Who was called the political father of the Ezhavas?
Answer
C. Dr. Padmanabhan Palpu
82
The historic monument built to commemorate the soldiers who died in first world war : |
Answer
D. India Gate |
83
Dada Saheb Phalke award winner for the year 2014:
Answer
A. Sasi Kapoor
84
‘Athmavidyasangam’ was founded by :
Answer
A. Vagbhatananda Swamikal
85
Who became the speaker of Kerala Assembly after the death of G. Karthikeyan?
Answer
B. N. Sakthan
86
Joseph Sepblatter, President of FIFA who resigned recently belonged to :
Answer
B. Switzerland
87
‘Swaraj is my birth right and I shall have it’, Who said this?
Answer
C. Bal Gangadhar Tilak
88
Amarthyasen received Nobel Prize for :
Answer
B. Economics |
89
‘Which one of the following is not an east flowing river in Kerala?
Answer
D. Pamba
90
Mission Indradhanus is a programme :
|
Answer
A. To immunise children against seven diseases
91
Chennara, the birth place of Mahakavi Vallathol is in:
Answer
B. Malappuram District
92
Gandhiji's first Sathyagraha in India was at :
Answer
D. Champaran
A 13 212/2015
(P.T.O.]
93
SAF games 2015 is going to be held in which of the following state?
Answer
C. Kerala
94
Poykayil Yohannan was also called :
Answer
D. Kumara Guru
95
Which one of the following was not a member of cabinet mission in 1946:
Answer
C. Lord Mount Batten
96
The Hirakud Dam is built across the river :
Answer
A. Mahanadi
97
V.T. Bhattathiripad was the author of :
Answer
B. Kanneerum Kinavum
98
Poorna swaraj resolution was passed by Lahore session of Indian National congress in the
year : |
Answer
C. 1929
99
The famous news paper owned by Vakkom Abdul Khader Moulavi : |
Answer
D. Swadesabhimani
100
The Kerala Government's campaign ‘Subodhany is an :
|
Answer
A. Anti drug awareness programme
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